private void PrintPurchase_Click(object sender, EventArgs e)
{
RPT.RPT_FORM frm = new RPT.RPT_FORM();
string I = CLASS_FACTURE.MAXFACTURE();
RPT.Facture raport = new RPT.Facture();
raport.SetParameterValue("@NO_FACTURE", I);
frm.crystalReportViewer1.ReportSource = raport;
frm.ShowDialog();
txtQtevendu.Clear();
txtarticle.Clear();
txtdesigniation.Clear();
txtprice.Clear();
txtQteStock.Clear();
txtCodeclient.Clear();
txtname.Clear();
txtfirstname.Clear();
txtsold.Clear();
dgvFacture.Rows.Clear();
}